Metal-window meeting-rail.



EDWINjR. PROBERT, or oovineron. KENTUCKY, ASSIGNOR o THE MOESCHL-EDWARDS ooRRuo-Arme co'MrANY, or

Tron-ea KENTUCKY.

COVINGTON, KENTUCKY, A CORPORA- METAL-WINDOW MEETING-RAIL.

To all whom it may concern:

Be it known that I, Enwix R. Pnonnur, a citizen of the hinted States ofAmerica, and a resident of Covington, in the county of Kenton and Stateof Kentucky, have invented a certain new and useful Improvement inMetal-Vindow Meeting-Rails, of which the following is a specification.

This invention relates to safety interlocking-formationsalong themeeting-rails of metal window-sashes whereby the undue entrance of fire,smoke, draft, dust, water and other deleterious elements is preventedand especially at the weakest or most vulnerable point for such elementsto enter a buildingstructure through a closed window.

The object is to provide the meeting-rails with deepfrictionally-engaging tongues and grooves on both the upper and loweredges of the rails and having an air-space or in sulating-chamberbetween them to collectively and thoroughly oifset the flames or smokefrom a fire without.

The details of structure for carrying out the said object of theinvention herein will be fully hereinafter described and particularlypointed out in the claim.

I In the accompanying sheet of drawings,-

- Figure 1 is a vertical diagram-section partly in elevation, taken onthe dotted line a, a, of Fig. 2, and showing my improved meeting railstructure as applied to a pair or set of closed, hollow, sheet-metalwindow-sashes, the side-stiles of the latter being broken off on linesnear their respective meeting-rails; and Fig. 2 is an outside elevationof the type of metal Window to which my invention is especially adapted.

1 in icates the upper-sash and 2 the lowersash both incased forvertical, sliding movewent in a suitable-frame composed of the 1 ".ialupright-members 3, 3, sill 4 and head 5.

As my inventiongis especially adapted for use in connection withsheet-metal windowstructures formed with hollow walls and resultant orconsequent insulator-chambers throughout, and, more particularly, intended to meet the rigid requirements of underwriters in the quest forprotective-insurance on property in which the windows are installed, Iwill. now describe the detalls or the meeting-rail joint or closure justas Specification of Letters Patent.

Application filed March 13, 1915. Serial No. 14,259.

Iaicntndbec. '7, I915.

they appear in Fig. 1, and that orm 1 mm:

effective fire-retardant at the least roam ent outlay.

The sheets or strips of metal use: in forming each of the meeting-railsare identical, as both rails are alike except that the 'recess 0r groovefor the glass-sheet in the 6 along one edge, and then right-angles at 7into a vertical stralght outer wall S; thence again right-angles at 9into a short, horizontal top-limb 10; thence takes an imitationmoldingcurve 11 till it reaches a short horizontal top-bend 12; thence it isformed into a slightly tapered glass receiving groove 13; thence itpasses onward into a horizontal top-limb ll alined with limb 12 thenceit descends with a vertical fore-wall 15 till an angle 16 is reached,and thence into a right-angled upturned-edge 17.

A narrower strip of metal is used as a horizontal or bottom filler 18between the.

first-named hook-end 6 and the upturnededge 17. and is bent intohook-form at 19 to interlock with said hook-edge 6, and then furtherbent along its opposite edge with a vertical downwardly-turned hook-edge20 that interlocks with the said upwardlyturned edge 17.

deep vertical tongue is provided by the interlocked hook-edges 17 and 20that projects at a right-angleupwardly from the edge of the bottom orfiller member 18 that then extends inwardly toward the inner meetingrailA.

The reverse order of the same parts or formations, (except in connectionwith the glass-sheet grooves referred to above,) in the sheet-metaloccurs in the meeting-rail A of the lower-sash and is enumerated toharmonize or correspond.

material than that of the meeting-rails, (as

distinctly shown by contrast in Fig. 1) and is composed of two sheets orstrips of metal, one for the upper-sash rail 1 and the other for thelowensash rail 2. These strips are each bent alike, and. each beginswith a right angled member 21 that extends into a vertical side-wall E,thence into a flaringlimb H; thence into a deep-folded doublelimb I thatextends thence at J along the said flaring-limb H, and ends with astraight short end that laps on the outer face of the side-wall E forriveted-connection K. The contacting, flaringportions H and J'space thevertical folded double-limb H away from the adjacent face of themeeting-rail to which the stripis riveted at K, whereby a deep groove orslit is provided for the tel-lapping engagement or seating of the tongueformed by the interlocked hook-edges 17 and 20. It will be observed thatthe vertical extensions or ends of the right-angled membersfll liebetween the said interlocked hook-edges 17 and 20, and are firmlycompressed together to make a stifi and strong tongue along theinterlocking upper and lower edges of two diagonallyopposite cor-.

"ners of the tire-retardant hollow guard that intervenes between the twomeeting-rails.

The drawings show space between the parts of the tongues and in thegrooves at both sides of the tongues, but it is obvious that such spaceis not really present in the device itself and should not be, as thetongues should frictionally-engage the grooves to as sure effectiveservice when needed.

The heavier-metal hollow-guard forms a st-iii and substantial reinforcebetween the two meeting-rails to assure the desired firm and tightinterlocking of the tongues in the grooves thereof, and no fire an passthis guard when the full engagement of the tchgues and grooves iseitectedJ I claim In a metal windowstructure comprising a pair ofsashes, a pair of spaced meetingraills on said sashes each havingoppositely but inwardly disposed L-shaped or rectangular flanges ontheir outer edges and inclosing the space between said meeting-rails. apair of metal strips one fitting in each of the L-shaped flanges, theopposite edge of each of said strips being offset from its corresponding mi'eetinga'ail to provide a recess for the reception of theextremity of the L-sha ped flange of the othermeeting-rail in saidrecess.

EDWIN R. PROBERT.

Witnesses:

Jon ELIAS Joxns, BERL RIGDON.

